Ramp Definition and 672 Threads

Homework Statement A block of mass 2.1 kg is placed on a frictionless inclined ramp of mass 20.0 kg, with the angle θ= 31o as shown below. http://s4.lite.msu.edu/res/msu/physicslib/msuphysicslib/09_Force_and_Motion/graphics/prob91_plane2.gif Calculate the size of the net horizontal...

Homework Statement You are working for a shipping company. Your job is to stand at the bottom of a 8.0-m-long ramp that is inclined at 37 degrees above the horizontal. You grab packages off a conveyor belt and propel them up the ramp. The coefficient of kinetic friction between the packages...

Homework Statement A ball of mass 522 g starts at rest and slides down a frictionless track. It leaves the track horizontally, striking the ground. a. at what height above the ground does the ball start to move? Homework Equations I have: mgh=mgh_2+1/2mv^2 which simplifies to...

Homework Statement An automobile driver traveling down an 8% grade slams on his breaks and skids 26 m until hitting a car... Homework Equations The Attempt at a Solution I have no idea what a 8% grade is. I am guessing it is a slope, but how much? Thanks for any help I am stumped.

Homework Statement "A solid sphere of radius R and mass M is initially at rest at the top of a ramp. The lowest point of the sphere is a vertical h above the base of the ramp. It is released and rolls without slipping down the ramp. Determine the linear acceleration while the sphere is...

Homework Statement A large hoop rolls without slipping across a horizontal surface. The hoop has a constant translational speed of 9.2 m/s, a mass m of 16 kg, and a radius r of 1.3 m. The moment of inertia of the hoop about its center of mass is 1mr^2. The hoop approaches a 22° incline of...

A solid sphere and a solid disk are released from rest at the top of the ramp. The inclination angle is theta to the horizontal and the vertical height of the ramp is h. Determine the time difference between the objects for them to read the bottom of the ramp. This is what I've solved...

Please help me with this question. Thank you. A 2.0 kg solid sphere (radius = 0.10m) is released from rest at the top of a ramp and allow to roll without slipping. The ramp is 0.75m high and 5.3 m long. Find Ktotal, Krot, and Ktranslation.

Coefficient of kinetic friction :confused: so I am working on the force of friction and overcoming friction i know that the coeffcient of friction is equal to the kinetic force over the normal force and i can get these when hte system is on a horisantal surface But i don't understand how to...

Question: A 500 g cart is released from rest 1.0 m from the bottom of a frictionless, 30 degrees ramp. The cart rolls down the ramp and bounces off a rubber block at the bottom. During collision, the cart and the ramp are in contact for 0.0267 sec. The average force exerted by the ramp on the...

Linear speed up a "ramp" After you pick up a spare, your bowling ball rolls without slipping back toward the ball rack with a linear speed of v = 3.02 m/s (Figure 10-24). To reach the rack, the ball rolls up a ramp that rises through a vertical distance of h = 0.47 m. What is the linear speed...

A 10kg box slides 4.0m down a frictionless ramp, then collides with a spring whose spring constant is 250 N/m. (Also, the ramp is angled at 30 degrees). a). What is the maximum compression of the spring? b). At what compression of the spring does the box have its maximum velocity? I started...

Given: A ramp which is sitting as illustrated below. The ramp weighs 200 lb. http://img165.imageshack.us/img165/8601/problem523fe4.th.png Find 1: Cable force (line CD) so that the reaction at point B=0. Find 2: Determine the Horizontal and vertical components of pin hinge at point A...

A hoop rolls up a ramp inclined at an angle of 27. If the speed of the center of mass of the hoop is 3.5 m/s at the bottom of the ramp, what height will the hoop reach? I am just not sure how to began. I am thinking i should use work-ene theorm but then i just get stuck. i can't seem to...

A skateboard track has the form of a circular arc with a 3.75 m radius. A 47.0 kg skateboarder starts from rest at the top of the circular arc. What is the normal force exerted on the skateboarder at the bottom of the circular arc? I tried using conservation of energy to solve for v mgh=1/2...

Hi, this question seems pretty easy, but I was just wondering if I'm missing anything with my solutions. Two ramps, one steeper than the other, are available to move a heavy crate from the ground onto the bed of a truck. In the absence of friction, it takes more force to push the crate up the...

1) A constant external force P=170 N at 30 degrees above the horizontal is applied to a 20 kg box, which is on a rough horizontal surface. The force pushes the box a distance of 8.0 m, in a time interval 0f 6.0 s, and the speed changes from v1 = 0.3 m/s to v2 = 2.5 m/s. The work done by external...

A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 30 degree angle. The block's initial speed is 10 m/s. The coefficient of kinetic friction of wood on wood is .200 1)What vertical height does the block reach above its starting point? 2)What speed does it have when it...

A box of textbooks of mass 24.4 rests on a loading ramp that makes an angle a with the horizontal. The coefficient of kinetic friction is 0.230 and the coefficient of static friction is 0.360 . I figured out that the angle is 19.8 and acceleration is 1.2m/s^2. I would like to know how to...

Can someone help me with this problem. A 2.0 kg wood block is launched up a wooden ramp that is inclined at a 30 degree angle. The block's initial speed is 10 m/s. The coefficient of kinetic friction of wood on wood is .200 1)What vertical height does the block reach above its starting...

I have to make a ramp, eek! Here is my assignment. I would appreciate help with choosing what formula to use. I am so lost. Design a Ramp: The ramp can be made of any material and be any width, length, and/or height. The only rule is that there must be a ball of any material that will...

A ball is rolled down a frictionless incline at some angle \theta below the horizontal. If you increase the angle of the incline by a factor of two (make the ramp steeper downward by twice as much), does the ball roll down at double the speed? Here is what I said: No. because of the following...

This one's killing me: A box with a mass of 22 kg is at rest on a ramp inclined at 45 degrees to the horizontal. The coefficients of friction between the box and the ramp are u(s) = 0.78 and u(k) = 0.65. Determine the magnitude of the smallest force that can be applied onto the top of the...

Lets say you have a ball on a ramp (hight h). It rolls down to the ground and then starts moving at aconstant speed - no friction (ok don't kill me, it's not really rolling either, just sliding). Now to the point of view of someone moving at the final speed of the ball and in the same...

A ball is rolling down a ramp, which of the following is true: 1) gravity is pulling both in the direction of the ramp an perpendicular to that, the perp part is cancled out by the normal force so the ball rolls in the direction of the ramp. 2) gravity pulls down, this causes a normal force...

Hi there, Before i state what my actual question is, let me give some background on some work i have done on this. I have been trying to solve the 0-D PRKE transient problem for a step and a ramp input numerically using couple of high precision methods. 1) Using MATLAB's inbuilt ode23s...

The 30 lb box A is released from rest and slides down along the smooth ramp and onto the surface. Determine the distance s from the end of the surface to where the box stops. The coefficient of kinetic friction between the cart and the box is \mu_k\,=\,0.6...

I have a question dealing with acceleration. A car is on a frictionless ramp. The car is tied to a string that goes over a pulley and over the pulley there is a hanger. As the mass of the hanger increases should the acceleration of the car increase, decrease or stay the same. I thought it...

This is the most horrible question I've ever had to do. It should be simple, but it's not! A cart moving at 8 m/s on a flat surface goes up a frictionless ramp tilted 10 degrees from the horizontal. How far up the ramp should the cart go? It's not worded like that exactly, but the question...

Hello everyone. I am new to the forum. And this is my first question. Consider an experiment with a ball rolling down a ramp. We have to determine several factors effecting its average speed. Please CONTINUE READING BECAUSE THIS IS A DIFFERENT QUESTION THAN THE TRADITIONAL ONES. Now, the...

I have a 1kg weight on a rmap inclined 20degrees being pulled upwards and to the left *******- ***********- ************** - ******************- in that motion above(look at dashes only), is it -ma or +ma? so the equation is -a = t - mgsin20 or a = t - mgsin20 I am just wondering if a...

Hi everyone, I'm having a problem in solving dynamics problem involving ramp and friction forces. I'm wondering if anyone could give me some help to check my answers and give some hints on how to solve the problem :P Anyways, here is the description of the problem. If you find it unclear...

I bumped into this physicis problem about 2 weeks ago and it is much harder than you might think: A ball is dropped down a frictionless ramp an eliptical ramp. It must travel down the ramp and then back up the ramp to its original height 10 meters away. What is the equation that defines the...

Hi guys (and girls), I'm kinda new to these forums. What I mean by that is I haven't yet posted anything, but I have been lurking around for a few weeks. Anyways, I'm stuck on this homework problem. A 500 g cart is released from rest 1.0 m from the bottom of a frictionless, 30 degree ramp...

I am doing a lab report and something is wrong. I don't know if it is my results, or if it is my calculation. What we did was pull a cart up a ramp upside down (wheels facing up) with different masses and different angles of the ramp. We pulled it up with a spring scale calibrated in...

This question is driving me nuts. I really need help with it, actually i just need help setting up my equations. Mu = the weird friction sympol A box of a mass m=22 kg is at rest on a ramp inclined at 45 degrees to the horizontal. The coefficient of friction between the box and the ramp...

here was the original question. in the design of a super market, there are to be several ramps connecting different parts of the store. cusomers will have to push grocery carts up the ramps. An engineer has done a survey and found that almost no one complains if the force require is no more that...

the problem we got in class was that an object of mass m was sliding down a quarter-circle ramp (or "quarter pipe) that had a radius a, and a coefficient of kinetic friction "mu". if the mass began down the ramp from rest and continued to the bottom, what would it's final velocity be? i had...

http://img384.imageshack.us/img384/5267/physicsproblem3aq.jpg This is my problem. I called the angle between ramp and horizontal theta. Then, i formed a rectangle between V0 and the ramp, and found the angle between the ramp and V0 is also theta. Then, i repositioned my...

Hi guys... Can anyone hlp me with the mechanism of a cylinder rolling down a ramp? Here's my understanding about the problem. Can anybody corrected me? If the CM is located at point O (the center of the cylinder), then the torque of for the rotational mechanism is provided by the friction force...

A 110 g marble rolls down a 39.0 deg. incline. At the bottom, just after it exits onto a horizontal table, it collides with a 290 g steel ball at rest. How high above the table should the marble be released to give the steel ball a speed of 200 m/s? well first i tried to use the formula...

What is the force of gravity acting on the block? are they asking for a) F = mg or b) F = mgsin(theta) thanks

can i just get someone to confirm this? just want to make sure I'm understanding this correctly. A ball is rolled up a ramp. The initial velocity and the acceleration down the ramp due to gravity is given. Vi = 10 m/s a = 2 m/s -------------------------------------------------...

Thanks for the help, i think I'm getting it, but i still have doubts, anyway, here's the problem: A wedge of 15° is pushed under a tube of 50 kg as shown in fig 1. \mu_S = 0.20 in all the surfaces. Determine the required force P to move the wedge. answer is P &= 283 N\leftarrow...

There is a block of W Newtons and a ramp is A degrees above the horizontal. At this angle the block begins to slide. How do I find the force of friction and then it should be quite easy to find coefficient of friction. (I already have already solve for the normal force Fw and the force...

Hi all, I've been doing a lot of research recently, but am still struggling to do a good hypothesis for my experiment. The experiment is to find the efficiency of a ramp. I will be changing the height of the ramp and will be measuring the force required to lift a bucket with a total mass...

Fro some reason can't figure this one out: A box is sitting at a frictionless ramp, with a force of 150 N acting on the box, perpendicular to the ground. The ramp is at 25 degrees towards the normal. a)Determine the force parallel to the surface of the ramp, that would keep the box from...

A block and disk with equal masses are released from the same height on a 30° incline. The block slides down the ramp while the disk rolls. If they both reach the bottom at the same time, what must be the coefficient of kinetic (sliding) friction? ANSWER: mk = (1/3)tanX = (1/3)tan(30°)...

In the figure below, a ball is let go from rest at the point shown on the ramp. The region on the left side of the ramp has friction; on the right side, the friction is negligible. http://i2.photobucket.com/albums/y7/twiztidmxcn/RollingFig1.gif Theres the picture. It won't upload because...

A box slides down a ramp inclined at 41 degrees horizonontal with an acceleration of 1.4 m/s^2. The acceleration of gravity is 9.8 m/s^2. Determine the coefficient of kinetic friction between the box and the ramp. no ideas need any advice